Input unit of an electronic lock



FIG. 1 is a right side, top perspective view of the input unit of an electronic lock embodying our design;

FIG. 2 is a front elevation view thereof;

FIG. 3 is a rear elevation view thereof;

FIG. 4 is a right elevation view thereof;

FIG. 5 is a left elevation view thereof;

FIG. 6 is a top elevation view thereof; and,

FIG. 7 is a bottom elevation view thereof.

The broken line in the drawing FIG. 3 depicts part of the input unit of an electronic lock that forms no part of the claimed design. 

CLAIM We claim the ornamental design for input unit of an electronic lock, as shown and described. 